Operating mechanism of a three-position switch

Details Operating mechanism of a three-position switch Operating mechanism of a three-position switch

1991-03-12

1992-09-22

Broome, Harold

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

200148F, H01H 506

Patent

active

051489139

ABSTRACT:
An operating mechanism of a three-position switch having a contact-bearing main shaft comprises a switch closing and opening operation device, and an earthing device closing and opening operating device. The two devices comprise driving flange plates connected by a common spring capable of being loaded by rotation of either of the operating shafts and transmitting, after the deadpoint has been reached, a drive movement of these flange plates transmitted by articulated levers to a crank handle wedged onto the main shaft. All the operations are high-speed and the torque transmitted to the main shaft increases in the course of the operating movement. A locking device maintains the main shaft in the open position during the loading phase of the spring.

REFERENCES:
patent: 3959615 (1976-05-01), Zaffrann, Jr. et al.
patent: 4916268 (1990-04-01), Micoud et al.

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